Closure for receptacles



MarchlZ, 1929. G. MILLER 1,705Jkfy 4 CLOSURE FOR RECEFTACLES Filed May 20, 1924 1.5? Y' INVENTOR BY 0m CL. m. KFM

ATTORNEY n drawings, forminof Patented Mar. 12, '1929. d

UNITED STATES..

PAT--ENT o-FFieE.

Louis G. MILLER, or lBnrrnainnivi, 1'nNNsrLvANIA,v Assreivony To BETHLEHEM 'STEEL COMPANY, onBa'rHLnHnM, rnNNsYLvANi- A l eLosUnE FOR RECEPT-Actus.

Application filed May 20,l

My invention relates to covers or closures for receptacles or storage tanks, such, for example, as tank cars, andv it has` for an o bject to provide apparatus of this characterwhich shall be safe to manipulate.

A further obj ectfof my inventionl is to provide a. cover having a bayonet-like type of connection with respect to a tank or receptacle. y, l

A further object of my invention iste provide a cover requiring loosening in an outufard direction before the corer may be disengaged from a. receptacle by turning movement, thereby permitting the gradual escape of gas from the receptacle incidentto the re-v moval of the cover.

Apparatus made in accordance with my 'in'- vention is illust-rated in the accompanying i g part of this application,

in which: I n I n Fig. l is a plan view ofa dome lid mits closed position on the receptacle.;- 'f y Fig. 2 is a partsectional view, across line lll-H in Fig. l, of` they dome rmg,dome lid, receptacle, andthe means adaptedfor securing the dome lid in its closed position;

Fig. 3 is a sectional view of a. ring showing the safety stop in elevation;

Fig. 4 is a part plan view of the dome lid, dome ring and receptacle with asection'of the bracket projection corresponding to line iV--IV in Fig. 5; and,

Fig. 5 is a detail sectional vien' across line iL-i7 of Fig. 2, showing bracket projection, dome lid lug and safety stop.

ln Figs. l, 2 and '5, show the interior shell A of the receptacle, having the usual opening B provided therein. A circular domo ring con: ing of a main body portion C, a' depending annular flange D to correspond with the opening- B, a suitable number of vertically upstanding projections' E, equally 1nterspaced around the periphery el the body C, and a suitable number of stops Fprojecting at points intermediate between the projections E. The projections are of right angled section (as shown in Fig. 1i) and have their members joined by two parallel flange portions or webs G and G1 (Figs. 2 and These Webs are drilled to freely accommodate tap bolts H, suicient clearance being left between the parallel Webs to permit the interposition of nuts I.

The dome ring is riveted to the inner shell A of the receptacle near the edges of the 1924, serial Nahlinse.

iyoverlapping the rimthereof at every point Y The dome hd or closure on its periphery. consists of a l'iody portion K, a depending annular vflange L adapted to iit within the dome ring flange D, a peripheral flange M with lugsv ll extending therefrom, equally spaced, and in number to correspond with the projections E of the dome ring, and two upstanding pins 0 adapted fora suitable ltey bar to .facilitate rotary movementof the deine lid.

The lou/'er face of the peripheralflange is grooved for insertion Vof, .suitable gasket l), so as to effect a Close joint between-dome ring and lid when the lid is in its closed position. The body of the dome lid is dished` outwards in the usual manner, the reinforce.- ment of the lugs N being effected by the radial ribs Q.

An important feature of my invention rc# sidesin the position of thesafety stops F on the dome ring. Thesepstops are of the shape;v

eor

shown in Fig. 3 and occupy ,a positioninterA mediate betiveen the projections as shoivnfin Fig. l. The distance between the tight ,anr-y gie faces ofthe stops F andthe edges of the Webs G1 is appreciably less than the Width of the lugs N. Owing to this, it is impossible to turn the dome lid about its axis when its closed position far enough to disengage the lugs N from the Webs Grl. If, however, the dome lid be raised, by thepartial Withdrawal of tap bolts H, so that the lugs N may 'clear the top of the safety stops F, a sulicient turning` inowinent can be givenk tothe dome lid to effect the complete disengagement of the lugs N from the said Webs of the projections E. Tl'ierefore, in the event of an accumulation of gas under pressure in lthe receptacle, gradual Withdrawal upwards of the tap bolts H by the slacking' back of the nuts l, permits of the gradual raising of the ldome lid and consequent release. of the gas pressure around the joint P. The release of this pressure is thereby insured before the comn plete disengagement of the lugs can be effected. f

When securing the dome lid in its closed position, the tap bolt-s are lowered so as to bear on the lugs of the dome lid. The necessary compression at the gasket joint P is obtained by the thrust of the nuts I against the under faces of the upper Webs G.

claim as new and desire to secure by Letters l angular movement of the closure member until the pressure-exerting means have been relieved 'to a predetermined extent.

2. In a closure construction, the combination of a seat member, a closure member, a plurality of radial tongues carried by the closure member, a plurality of outwardly extending members connected to the seat member and having transverse slots adapted to receive said tongues, the tongues being engaged in and disengaged from the slots by angular movement of the closure member, means carried by the outwardly extending members for exerting pressure on thetongues to firmly engage the closure and seat members, and lugs carried by the seat member and spaced from the entrance sides of the slots distancesless than the widths of the tongues and having their top surfaces disposed outwardly of the bottom surfaces of the tongues when the closure member is seated.

y closure member,

3. Ina closureV construction, the combination of a seat member, a closure member, a plurality of outwardly-extending and spacedapart tongues carried-by the closure member, a plurality V4of upstanding' members connected with the seat member, spaced similarly to the tongues, and deiining tongue1eceiving slots, means carried by the upstanding members for exerting pressureron the tongues to irinly engage the closure and seat members, and

vlugs carried by the seat member and disposed Y to one side respectively of each slot a distance less than the width of the corresponding tongue, and having their respective top sure faces disposed outwardly of the inner surfaces or the tongues when the closure member is seated with respect to the seat member.

4i. lin a closure construction, 'tiie'combination of'seat and closure members having telescopic flanges, a circumferential series of spacednpart tongue members lcarried by the a plurality oi'upstanding members having lateral flanges which define tong'ue-receivingl spaces, screws extending through the i'ianges for firmly engaging the seat and closure members, and lugs connectedwith the seat member and Vspaced from the entrance sides of the sp aces distances less than the Widths of the respective tongues for the corresponding spaces, and having their tops spaced outwardly of the inner surfaces of the tongues when the closure member isseated with respect tothe seat member.

In testimony whereof` I hereunto atiiX my signature this l5 day of May, 1921i.

LOUIS G; MlLLER. 

